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benzinga Corporate Catalyst Impact 85/100 ● positive

Arrowhead Pharmaceuticals Announces Topline Results For Phase 3 SHASTA-3 And SHASTA-4 Clinical Studies Of Plozasiran In Patients With Severe Hypertriglyceridemia; Observes Deep, Durable, And Consistent Median Triglyceride Reductions Of 79% And 81% From Baseline

Jul 22, 2026, 11:33 AM UTC · Primary ticker $ARWR

Arrowhead Pharmaceuticals announced positive topline results from its Phase 3 SHASTA-3 and SHASTA-4 clinical studies for plozasiran, showing significant triglyceride reductions and a 100% reduction in acute pancreatitis events in high-risk patients. This strong clinical data suggests a potentially highly effective new treatment for severe hypertriglyceridemia, which could significantly boost the company's future revenue and market position.

Arrowhead Pharmaceuticals reported highly positive topline results for its plozasiran drug in treating severe hypertriglyceridemia (sHTG). The drug demonstrated deep, durable, and consistent median triglyceride reductions of 79% and 81%, along with a statistically significant reduction in acute pancreatitis events, including a 100% reduction in high-risk patients. This is a major positive catalyst for ARWR, as it de-risks the drug's path to market and highlights its potential as a best-in-class treatment. Short-term, this could lead to a significant upward re-rating of ARWR stock. Long-term, successful commercialization of plozasiran would provide a substantial new revenue stream and solidify Arrowhead's position in the cardiovascular therapeutic area. The key opportunity for traders is the potential for continued upside as the market digests these strong results and anticipates future regulatory filings and commercial success.

$ARWR positive Positive Phase 3 clinical trial results
Source: benzinga
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